Tamping-machine



T. M. DAVIDSON AND l. CHESNEY.

TAMPING MACHINE. APPucATloN mso :uns 13. 191s.

1,372,009, Patented' Mar. 22, 1921.

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narran stares eer/'raar oei-rica.

THOMAS MALCOLM DAVIDSON, 0I' WILMINGTON, DELAWARE. AND JOHN cIIgEsNEY, or

GIBBSTOWN, NEW JERSEY, ASSIGNORS T0 E. I. DU PONT DE NEMOURS & COMPANY,

OF WILMINGTON, DELAWARE. A CORPORATIQON OF-DELAWARE TAMPING-MAGEHT.

Specification of Letters Patent. A Patented Mar. 272, T921.

Application filed June 13,1918. Serial No. 239,743.

provement in lTamping-Machines, and do hereby-declare that the following is a full', clear, and exact description thereof.

Our invention relates particularly to a i machine adapted to be used in the-tamping of explosives or other materials to be filledA into shells. The object of our invention is to provide a machine of this character which will fill shells and bombs of many different Vsizes with explosives or other materials that are dryf'or moist, to a predetermined density, even when most difficult mixtures of -malterials are used.

; .Y this kind which will fill the shells while in an upright position, so that the shells may be fed beneath the machine, thus eliminating the manipulation of the-shells prlor to y 1oading,.so far as possible. l

. into the 'shells without affecting the operator.

Still another object of'our invention is to provide a machine by the use of which materials deleterious to the health of the' op-'- erator, as for example materials used-1u smoke and' gas shells, etc., may be loaded' Again, an ob'ect of our invention is 'to provide a machine by which the explosives orother materials may be introduced Into shells in distinct strata.` v Further objects of our invention will a'p'- pear from the detailed. description thereof l l prised of a central split sleeve 42, havmg^a l 'contained hereinafter.

l While our invention is capable of embodi-v ment in many diierent forms, for the pur-gv (pose ofppillustration we have shownl only one form of our invention in the accompanying drawings, in which- Figure 1 is a-vertical section of an apparatus made in accordance with our invention; and Fig. 2 is a. vertical section of a detail enlar ed. f y n the drawings, we have shown a framework 1, adapted to be connected to a"oor 2, said framework comprising a plurality of uprights 3, 4 and 5, connected bycrossbeams 6, 7 and 8. Upon the floor 2 there are provided tracks 9 for receiving a truck 10,

adapted to carry a plurality fof shells 11,'-

having central openings-12, to receive the explosive or other materials'. to be tampedv into the same. Each cshell 11` rests lupon a cup-shaped 'support 13, having a downwardly-directed projection 14, provided with a tapered recess 15 to receive afcentel` point 16 carried by a piston 17, which reciprocates in a cylinderlS, supplied with com-4 pressed air by afpipe 19. .The cup-shaped support 13 is rotated in an inclined position by frictional contact with a friction wheel 2O located on aV shaft 21` and lpressed against a support 13 by a spring 22 located between: one of 'a pair-of vbearings'23 -and 24 for' the shaft 21'and a drivingpulley 25. .The driving pulley. 25 is rotated by a belt 26, passing over a pulley/'27, -on a'shaft 2 8, supported in` a bearmg 28aA fromfth upright. 3, which shaft carries a larger pulley 29,!driven by a belt 30 from a pulley31ona main drivmg, shaft' 32, supported 0n the upright 3 'by a bearingf33. The shaft 32 is' drlven by means of va pulley 34 carried thereon and a belt"35 ton 38, to which is "attached-a tamping rod 39, having astop-40 to coperate with 'a frictional driving member 41, 'which is 'com-` ousing 43, carrying a pluralitybf thumbscrews 44 toad u'st the. pressure upon`v the connected with "any suitable'source ofpower.

,froid 3 9. The f netional driving member-41 has a pivotal connection to a link 45, which is connected to a crank 46 on the vshaft 32.'

By this means the rod 39 is reciprocated. Around the rod 39 there is located a rotary sleeve 47 carrying a pulley 48, driven by a belt 49, passing over an idler 50' and .over a driving'pulley 51 on shaft 32. On the outside 0f the sleeve 47 there is a largerv 'sleeve' 53,v carrying a bevel gear 54, which is driven by a bevel gear 55 on the shaft 28.` The sleeve carries a spiral stirrer 56, which is located in a hopper 57, while the sleeve 47l carries a. helical blade 58 located in the mouth ofsaid hopper 57, which is designed toproject into the shell 11. Within the shell 11, the tamping rod 39 carriesa head 59,

' having a tapered end 60, the side of which is substantially parallel t0 the nearest portion of the inclined inner surface of the shell 1l.. Said head 59 may be made of wood, brass, steel or hard rubber, or any other suitable material.4 f.

In the operation vof our invention, the

, shells 11 will be fed forwardly from time y tamping rod 39, which has been previously withdrawn byl operating the air cylinder 36, so that vthe cup-shaped support 13 rests upon the pin or plunger 15 and the edge of said support 13 is in contact with the friction wheel 20', the air cylinder 36 is operated to move the rod 39 downwardly tothe lowest position available in the shell l1. Power is thereafter applied to the -tamping machine V'by the .belt 35, and the materials, as for example explosives in the form of dry grains, are fed int-o the hopper 57. The t'amping rod' 39 will be continually reciprocated by the friction driving member 41, while the said shell 11 will be continually rotated by the friction wheel '20 in an. inclined position. The stirrer 56- will keep the materials in a continual state of agitation in .the hopper 57, so that they will lbe easily 'and uniformly fed from ,the same while the blade 58 will fee-d vthefmaterials from the hopper 57 intov the shell vl1. 'As the materials in the shell gradually 'accumulate and are packed in.

place, the tampipg rod-39 will slip upwardly in the friction driving member 41A from time to time on the downward stroke, so that va predetermined density may be obtained, which density will be determinedfbyl the p'o-- sition of the thumbscrews 44.

When at yany time during the tamping operations, 'or at .the end of the tamping operation, it is desired to withdraw the tamplng rod 39this may be do'ne by the o' eration bf'thezair. cylinder 3.6, 'the stop lop# erating to limit the upward movement of said tamping rod.

When the tamping operation has been completed and the tamping rod 39 has been withdrawn, they air cylinder 18 will be op- 70 erated to lower the cup-shaped support 13 onto the truck 10, after which the truck may lbe lmoved forwardly to convey away thev lilled shellA and permit other shells to be drawn into place in succession beneath the 75 tamping machine, to'be filled in the' same manner as above described. n

lt will be understood that, if different materials are to be packed into a particular shell in the form of strata, this may be read- Vily done by feeding one material at one time and thereafter feeding vanother maades, etc.-

`We claimi p 1. A tamping machine comprising tamping devices, means to elevate a shell to the same for filling in a substantially vertical position, and means for rotating the shell during'the tamping operation.

2. tamping machine comprising tamping devices, means to elevate a shell te the same for filling inA a substantially vertical position, and meansfor rotating the Shell in a slightly inclined position'during the tamp` ing o eration..

3. tampin'ggmachine comprising tamp- 105 ing deviceshmeans to 'elevate a shellto thel same for filling in a substantially vertical position, and means: for rotating the shell in.

a slightly inclined position during the tamping operation, comprising a rotatable support, a vertically movable pivot fo'r the sameand a peripheral drive-for the support. 4. A tamping machine comprising shell-f holding means, a hopper for feeding the ma-l terials tol Vbev tamped, Ja vscrew feed in Athe mouth of `said hopper and a 'stirrer in said hopper, land tamplng means comprising a tamping rod passing through a sleeve which carries the screw feed around which a slevef is provi-dedcarrying thestirrer. E '5. A tamping machine comprisingl shellholding means, al hopper' for feeding the masi 4 terials to be tamped and ascrew feed in the; mouth of said hopper tampng means, and :a friction driving evice for'vreciprocating 125 holding means, A,a hopper Afor feedlng'lthe materials to be tempted, airacrew4 feed in ftheI 4moua eresia .happend-fa. in` wie, 130

hopper tamping means, and a friction driving device for reciprocating jthe tamping means. A

7. A tamping machine comprising shellholding means, a hopper for feedmg'the materials `to be tamped and a stirrer in the body of the hopper tamping means, .and 'a :friction driving device for reciprocating the l' tamping means,'said tamping means being coaxial with said stirrer.

8. A tamping machine comprising 'shellholding means, a hopper forv feeding the materials to be tamped, a screw feed in the mouth of said hopper and a stirrer in said hopper, tamping means comprising a tamping rod passlng through a sleeve which carrles the screw feed.around which a sleeve is provided carrying` the stirrer, and a friction driving device .for reciprocating the tamping means.

9.- A tamping machinel comprising shell.

holding means, a hppper for feedmg the materials to be tamped and a screw feed in the mouth of said hopper tamping means, a friction driving device for reciprocating the tampin means, and an air cylinder for operating the tampug means independently of the friction drive.

10. A tamping machine comprising shellholding means, 'a hopper for feeding the materials to be tamped, a screw feed in the mouth of said hopper and a stirrer in said hopper tamping means, a friction driving device for reciprocating the tamping means,

and an air. cylinder for operating the tamping' means independently of the frictionA drive.

11. A tamping machine comprisinglshellholding means, a hopper for feeding t terials to be` tamped and a stirrer in the -body of the hopper tamping means, a frictionv driving device for reciprocating thetamping means, and an air c linder for operating the tamping means in of the friction drive.

said shell during rotation thereof.

ependently 12. A tamping machine comprising shellholding means, a hopper for `feed1n the materials' to be tamped, a screw feed 1n the shell holder, means for rotating saldholder when the latter is in position on said center point, and means for feeding material Ainto said shell during rotation thereof.

14. A machine ofthe class described, y

comprisno` a shell holder, a center point substantialy in une with 'the longitudinal axisH of the shell and adapted to engage said shell holder. means for rotating sald holder when the latter is in position on said center point, means for feeding material-.into said shell 'during rotation thereof, and a reciprocable tamplng device adapted to work vwithin the shell.

15. A machine of the class described,-

comprising a shell holder, means for moving the shell into positionto be filled, va friction driving device engaged when the shell is moved into position to be filled to rotate thel shell, and means for feeding material in -In testimony. that we claim the foregoing we-have hereuntoset our hands.

'. moms MALCOLM mvmson. l

Jour cnrsuev.

Witnesses:

F. Ammer, p EDNA Enermax 

